Looks like they only had one or two of each product. Southwest was gone when I looked 90 minutes ago. I added the Windrider Medium to my cart, removed it and when I tried to add it again it was gone. Shipping is ludicrously expensive though, the cheapest option for the Summit pack was FedEx Ground at $17.

Technically typos like that are protected under false advertisement/consumer protection laws (in other words they have to honor the deal for stock in hand or however many orders they take) but probably not worth pursuing that avenue if your card wasn't charged at all.